| Grinon to Portage (Michigan) | 4,076.77 mi (6,560.93 km) |
| Grinon to Portage (Wisconsin) | 4,204.02 mi (6,765.72 km) |
| Grinon to Portales (New Mexico) | 5,183.89 mi (8,342.66 km) |
| Grinon to Porterville (California) | 5,752.38 mi (9,257.57 km) |
| Grinon to Portland (Maine) | 3,328.79 mi (5,357.17 km) |
| Grinon to Portland (Oregon) | 5,408.54 mi (8,704.20 km) |
| Grinon to Portland (Tennessee) | 4,312.39 mi (6,940.12 km) |
| Grinon to Portland (Texas) | 5,172.50 mi (8,324.34 km) |
| Grinon to Portsmouth (New Hampshire) | 3,367.81 mi (5,419.96 km) |
| Grinon to Portsmouth (Ohio) | 4,068.17 mi (6,547.09 km) |
| Grinon to Portsmouth (Virginia) | 3,812.99 mi (6,136.42 km) |
| Grinon to Post Falls (Idaho) | 5,110.27 mi (8,224.19 km) |
| Grinon to Potomac (Maryland) | 3,785.89 mi (6,092.80 km) |
| Grinon to Potomac Park (California) | 5,784.48 mi (9,309.21 km) |
| Grinon to Pottstown (Pennsylvania) | 3,674.50 mi (5,913.53 km) |
